"Practically a Steal"

The Woo Audio WA7 "Fireflies" Amp/DAC is a combination of high performance vacuum tube headphone amplifier with a built-in USB Digital-to-Analog Converter. It is a pure tube design, utilizing 6C45 tubes in a class-A, single-ended topology, with transformer coupled outputs. The 6C45 triode acts as both driver and power tube. There are no semiconductors used in the entire signal path.

The D-A converter is designed to be capable of up to 32-bit/192k sampling rates. This maintains pure data integrity, which is transmitted via standard high speed USB 2.0 interface operating in asynchronous mode.

"There's No Better Choice"

The WA& was voted the Best DAC by Lifehacker, which notes, "WA7 'Fireflies' are fully featured DACs with world-class vacuum tube amplifiers."

"The Fireflies is very highly recommended for anyone buying their first, or even possibly their last, reference amplifier," raves Dagogo.

Highest Quality Construction

The high quality construction features include a pair of Nickel Alloy core output transformers, all-aluminum chassis with no screws visible from any viewing angles, a remote-controlled linear external power supply for amplification circuitries, a custom built toroidal power transformer, and multi-layer military grade PCBs.

A thick block of superior quality, high clarity glass is provided to protect the tubes, while maintaining a clean and elegant aesthetic.

The Woo features two headphone jacks, one for 1-1/4" headphones and one 1-1/8" dedicated connection for in-ear monitors. There's also an RCA output. Despite its incredibly compact size, the WA7 is a powerhouse with the capacity to drive almost any demanding audiophile headphones. To accommodate different system setup needs, it can also be used as a stand-alone D-A Converter.

Adventures in Tube Rolling

This Woo Audio product is perfect for tweakers who love to experiment with their gear. Changing the sound quality is as easy as trying a different set of audio tubes as an alternative to the tubes that come standard with your Woo. You'll find lots of suggestions for 'tube rolling' on the Internet on head-fi.org and other audiophile Websites. So roll your own and enjoy!

Handcrafted and Made in the USA

Woo Audio takes great pride in every component that the company designs and manufactures. All products are handcrafted, and they're made in the USA.

Note: AC power cord and interconnect cables are not included with this model.

Handmade output transformer with Nickel Alloy core

32-Bit, 192kHz high resolution playback

Ultra-low jitter USB 2.0 runs on Asynchronous mode

High and low impedance output facilitated via toggle switch on back panel

Open load protection will automatically engage to prevent the amp from damaging when no headphones are plugged in